Drain strainer



March 13, 1934. .1. ROSSMAIINI 1,950,817

DRAIN STRAINER Filed Feb. 10, 1933 all I OOOOOO 6 000p 2 a o oo o of wd J J'fi/Q ATTORNEY Patented Mar. 13, 1934 UNITED STATES PATENT OFFICE 3 Claims.

My invention relates to improvements in drain strainers.

One of the objects of my invention is to provide a novel drain strainer, which is adapted to be removably fitted in the inlet end of a drain pipe of a wash bowl, bath tub, sink or similar water container, which strainer is adapted to be easily and quickly inserted into or removed from the drain pipe, which is simple, cheap, durable, not likely to get out of order, and which will reliably effect its functions.

A further object of my invention is to provide a strainer of the kind described which. is adapted to have removably and detachably fitted therein the drain plug with which the drain pipe may already be supplied.

Still another object of my invention is the provision of novel means for releasably locking the strainer in the drain pipe, so that the drain plug, though tightly fitted in the strainer, may be removed without liability of withdrawing with it the strainer.

A further object of my invention is the provision of a drain strainer which is adapted for application to drain pipes now in use without any alteration being made thereto.

The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawing which illustrates my invention,

Fig. l is a view, partly in elevation, partly in vertical section and partly broken away of a drain pipe in which is fitted my improved strainer of one form thereof.

Fig. 2 is a side elevation in Fig. 1.

Fig. 3 is a bottom view of the strainer shown in Figs. 1 and 2.

Fig. 4 is a vertical sectional view of a drain pipe having fitted therein a strainer, shown in side elevation, of another form of my invention.

Fig. 5 is a bottom view of the strainer shown in Fig. 4, partly broken away.

Fig. 6 is a vertical sectional view of another form of my invention in which the strainer is provided with opposite spring arms out from the walls of the strainer at their lower and side edges, and adapted to respectively enter lateral overflow discharge openings in the drain pipe so as to releasably engage the walls thereof to hold the strainer in the pipe, which is shown partly broken away.

Fig. 7 is a side elevation of the strainer shown in Fig. 6.

Referring to Figs. 1 to 3, 1 designates the cup of the strainer shown like body of the strainer, the bottom of which is provided with small perforations 2, and the upperperiphery of which body is upwardly flaring and adapted to be removably fitted in the upwardly flaring seat 3 at the inlet end of a drain pipe 4, which seat is adapted to have fitted in it a drain plug 5 of usual time. the plug 5 being also adapted to be removably fitted in the upwardly tapering portion 6 of the strainer, as shown in solid lines in Fig. l.

The upper end of the strainer may be provided, as shown, with an annular peripheral flange '7 adapted to rest upon the upper side of an annular peripheral flange 8 provided at the upper end of the drain pipe 4.

For holding the strainer releasably in the drain pipe, the body 1 of the strainer is provided with means adapted to releasably lockingly engage the drain pipe 4. Such means may be resilient latching means adapted to engage releasably the drain pipe through an opening or openings provided in the latter, as the two opposite lateral overflow discharge openings 9, Fig. l, or the discharge openings 10 through the bridge 11, with which the drain pipe 4 is provided below the openings 9.

In the form shown in Figs. 1 to 3, the latching means comprises an inverted U shaped member 12 centrally fastened by suitable means, as a rivet 13, to the center of the bottom of the body 1.

The arms 14 of the U shaped member 12 are resilient and at their lower ends are provided each with a downwardly and outwardly extending portion 15 adapted, when the strainer is in proper position in the pipe i to enter the adjacent lateral opening 9 and to releasably lockingly engage the pipe 4 at the upper edge of said opening. The extreme lower end of each arm 14 inclines inwardly and downwardly to enable the arm to be sprung inwardly when inserted into the upper flaring seat portion 3 of the drain pipe.

The arms 14 will hold the strainer. from ex-- traction when the drain plug, which has been fitted therein, is withdrawn therefrom.

To withdraw the strainer from the drain pipe, a knife blade, or other thin implement may be inserted under the flange 7, and the strainer then pried upwardly at that side therewith, thus releasing the adjacent arm 14 from the pipe, upon which the strainer may be lifted out.

The modified form shown in Figs. 6 and '7 corresponds in general structure to the form shown in Figs. 1 to 3, the resilient oppositely disposed arms 15, corresponding in form to the arms 14, and which function in the same manner, as the latter, being out on their lower and side edges from the sides of strainer body 16, which is cup shaped and perforated in its sides and bottom, and which at the top is provided with an annular peripheral flange 17 adapted to rest on the top of the pipe flange 8. The mode of operation of the form shown in Figs. 6 and 7 is the same as that of the form shown in Figs. 1 to 3.

In the form shown in Figs. 4 and 5, the construction is the same as regards the body 1, perforations 2, and flange '7, as that of the form shown in Figs. 1 to 3, the distinction between the two strainers residing in the form of the means for releasably locking the strainers to the drain pipe. In the form shown Figs. 4 and 5, the resilient latching means comprises an inverted U shaped spring plate 17' the center of which is fastened by suitable means as by a rivet 18 to the center of the bottom of the body 1.

The arms 19 of the plate 17 are extended through two openings 10 in the bridge 11, the lower ends of the arms having each an inwardly and downwardly extending portion 20 adapted to engage releasabiy and lockingly the under side of the bridge 11, the extreme lower ends of the arms each being downwardly and outwardly inclined, so that when the strainer is inserted into the pipe, the arms 19 can be expanded by the bridge 11 to enable the arms 19 to pass through the openings 10 and then have engagement with the bridge 11, thus releasabiy locking the strainer in its proper position. Aside from the locking means, the construction and mode of operation of the form shown in Figs. 4 and 5 are the same as has been described with reference to the form shown in Figs. 1 to 3.

By providing an inverted U shaped pipe engaging member, such as the member 12 and the member 17', centrally fastened to the center of the bottom of the body 1 by a single rivet, a very simple structure is produced in which the arms 14 and 19 have a maximum of resiliency and adaptability for flexing without breaking. I

Other modifications of my invention, other than those shown, and within the scope of the app nded claims, may be made without departing from the spirit of my invention.

What I claim is:-

1. A drain strainer adapted to be removably fitted in the inlet end of a drain pipe and having a perforate body, and an inverted U shaped resilient latching member fastened at its middle portion to the center of the under side of said body, the arms of said latching member having means for releasably engaging the drain pipe for removably holding the strainer therein.

2. A drain strainer adapted to be removably fitted in the inlet end of a drain pipe and having a perforate body, and an inverted U shaped resilient latching member fastened at its middle portion to the center of the under side of said body, the arms of said latching member being provided respectively with transverse crimped portions adapted to releasabiy engage the pipe and removably hold the strainer therein.

3. In a drain-strainer, the combination with a drain pipe having therein a transverse bridge, of a strainer having a perforate body, and an inverted U shaped resilient latching member fastened at its middle portion to the center of the under side of said body, the arms of said member having means for releasably engaging said bridge for holding said body removably in said pipe.

JESS ROSSMAN. 

